Lubbe W F, Bricknell O L, Marzagao C
Cardiovasc Res. 1975 Sep;9(5):613-20. doi: 10.1093/cvr/9.5.613.
Ventricular fibrillation threshold (VFT) measurements were obtained in the isolated perfused rat heart. Detailed morphology of the vulnerable period (VP) could be described by stimulating repeatedly at increasing levels of stimulus energy. Addition of lignocaine to the system caused an elevation of VGT, but also led to a delay of the VP to the end of the QT interval. The implications of these findings for the understanding of VFT measurements are discussed.
在离体灌注大鼠心脏中进行心室颤动阈值（VFT）测量。通过以递增的刺激能量水平反复刺激，可以描述易损期（VP）的详细形态。向系统中添加利多卡因会导致VGT升高，但也会使VP延迟至QT间期结束。讨论了这些发现对理解VFT测量的意义。
